There are many fantastic big presses that do a lot of great work, and this post is not discrediting large presses at all.
Rather, this post is a call to support small presses. There are tons of small presses out in the world as I have very recently learned, and they produce incredible work. Their poets and authors have won awards and received tons of recognition of their work, all because a small team of extremely dedicated people decided that their work was worthy of going out into the world.
Thanks to their size, they are able to accept unsolicited materials from debut poets who might have otherwise gone unrecognized.
Even if you are not a poet or author looking to be published, I recommend looking at the Poets & Writers list of small presses and consider supporting a few of the businesses there. You might find something truly remarkable.